Reactive dyes, their preparation and use

US5984978A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Herbert Klier · Bad Krozingen, DE
• Athanassios Tzikas · Pratteln, CH

Key dates

• Filing date: Feb 6, 1998
• Grant date: Nov 16, 1999
• Expiry date: Feb 6, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/09
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

There are described reactive dyes of formula ##STR1## wherein the variables are as defined in the claims. The reactive dyes of formula (1) are suitable especially for dyeing or printing cellulosic fiber materials.